There are several other problems. 1) When you come back to enter more data and expect the fields to be populated (the form takes a day or two to fill out the first time).
Again, fill out the form on the public side. Completely filled out. It doesn't need to got into the database until then.
2) When you need access to something and the manager of that element has to look at your file to approve it.
(a) The people who need to access it can be on the air gapped side, analysts and such.
(b) One person's data can be extracted from the database, walked across the gap, and sent to someone who needs it. The point of the gap is to isolate the database with everyone's records, and the monitor/supervise data coming from and being sent to public networks. Individual records being worked on at a given moment can outside. Expose of data being minimized.
3) When you get a new security manager and they have to approve it.
Such people can work on the air gapped side.
Your basically taking us back to the paper office days. In that time it was really easy to not put two and two together because cross referencing information was really hard.
Again, I think the people doing the cross referencing, analysis, etc can be on the air gapped side. They can be a team with members from all relevant departments and agencies.